PRNF14FTD1K91 Equivalent & Substitute Parts

Part Overview

The PRNF14FTD1K91 is a 1.91 kOhms ±1% metal film through-hole resistor rated at 0.25W (1/4W) in axial configuration, manufactured by Stackpole Electronics Inc. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct or upgraded functional replacement in circuit applications.

Substiute Parts

PRNF14FTD1K91

Stackpole Electronics IncIn Stock: 774PRNF14FTD1K91 Datasheet

Current PartRFQ

RNF14FTD1K91

Stackpole Electronics IncIn Stock: 7047RNF14FTD1K91 Datasheet

DirectRFQ

CMF551K9100FHEB

Vishay DaleIn Stock: 2377CMF551K9100FHEB Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PRNF14FTD1K91 are qualified based on the following criteria:

Direct Substitutes maintain identical electrical specifications (1.91 kOhms ±1% resistance, 0.25W power rating, metal film composition) and mechanical compatibility (axial package, same termination count). Packaging format differences (Tape & Reel versus Cut Tape) do not affect functional equivalence.

Upgrade Substitutes provide enhanced performance characteristics while maintaining core electrical compatibility. The CMF551K9100FHEB qualifies as an upgrade substitute due to increased power rating (0.5W versus 0.25W), improved temperature coefficient (±50ppm/°C versus ±100ppm/°C), extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 155°C), and additional moisture-resistant features. These enhancements allow operation in more demanding thermal and environmental conditions while preserving the 1.91 kOhms ±1% specification and axial package format.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (RNF14FTD1K91): This part maintains identical electrical and mechanical specifications to the PRNF14FTD1K91. Both are Active status products with ROHS3 compliance and equivalent performance characteristics. Selection between these parts is determined by packaging availability (Tape & Reel versus Cut Tape) and inventory requirements.

Upgrade Substitution (CMF551K9100FHEB): The Vishay Dale CMF551K9100FHEB provides enhanced performance for applications requiring higher power dissipation capability, improved temperature stability, or extended operating temperature range. The doubled power rating (0.5W) and superior temperature coefficient (±50ppm/°C) support operation in thermally demanding environments. This part maintains ROHS3 compliance and Active product status. Physical dimensions are comparable (0.090" Dia x 0.240" L versus 0.093" Dia x 0.250" L), ensuring mechanical compatibility in standard axial resistor footprints.

Frequently Asked Questions (FAQ)

Q: Can RNF14FTD1K91 be used as a direct replacement for PRNF14FTD1K91?

A: Yes. Both parts share identical resistance (1.91 kOhms ±1%), power rating (0.25W), composition (metal film), and axial package configuration. The difference in packaging format (Cut Tape versus Tape & Reel) does not affect functional performance.

Q: When should CMF551K9100FHEB be selected over the original PRNF14FTD1K91?

A: The CMF551K9100FHEB upgrade substitute is appropriate when circuit design requires higher power dissipation (0.5W versus 0.25W), improved temperature stability (±50ppm/°C versus ±100ppm/°C), or operation at elevated temperatures up to 175°C. The upgrade maintains the 1.91 kOhms ±1% specification and axial package compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The PRNF14FTD1K91, RNF14FTD1K91, and CMF551K9100FHEB are all ROHS3 compliant.

Q: Do substitute parts fit the same PCB footprint?

A: Yes. All parts use axial package configuration with two terminations. Physical dimensions are comparable: PRNF14FTD1K91 and RNF14FTD1K91 measure 0.093" Dia x 0.250" L, while CMF551K9100FHEB measures 0.090" Dia x 0.240" L. These dimensional variations are within standard axial resistor footprint tolerances.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging supplies components on continuous carrier tape wound on reels, suitable for automated assembly processes. Cut Tape packaging provides components on cut segments of carrier tape, suitable for manual assembly or smaller production volumes. Both packaging formats contain identical components with no functional difference.